Packet #1146381

Packet Information

Database ID:	1146381
Mesh Packet ID:	`0x972aa09f` Used for correlation across gateways
Timestamp:	2026-06-18 19:13:02 UTC
From Node:	!02eb959c (959c)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	TEXT_MESSAGE_APP Port: 1

Gateway:	REDEMER PC-00 (ROCA)
Channel:	SFNarrow
RSSI:	-113 dBm
SNR:	1.25 dBm
Hop Info:	5/5 hops Start: 5, Limit: 0
Relay Node:	`8d` GR02 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Payload Data

Protocol: TEXT_MESSAGE_APP

Size: 180 bytes

Decoded: Yes

Text Content:

Buenas noches. Hoy he reinstalado el firmware de un Heltec V4 con pantalla TFT que se reinicia en bucle. Me ha pasado varias veces y parece un problema de memoria de Meshtastic UI.

Raw Packet Analysis

Complete field breakdown and MQTT privacy/exposure analysis

Packet Structure

MQTT Packet Flow:
ServiceEnvelope (MQTT layer) → MeshPacket (Mesh layer) → Decoded Payload (Application data)

Total Size:	180 bytes
Gateway:	!d4a89e44
Channel:	SFNarrow
Payload Type:	TEXT_MESSAGE_APP
Hop Count:	5 / 5

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: SFNarrow
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

Field	Value
`gateway_id`	`!d4a89e44` Node ID format
`channel_id`	`SFNarrow`
`packet`	`MeshPacket` (180 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`48993692` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`TEXT_MESSAGE_APP` TEXT_MESSAGE_APP	enum
`decoded.payload_length`	`180` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`5` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-113.0` dBm Signal strength at gateway	int32
`rx_snr`	`1.25` dB Signal quality at gateway	float
`rx_time`	`1781809981` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	Not set	enum
`delayed`	Not set	enum
`channel`	`32` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`141` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	Not set	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Broadcast

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: SFNarrow
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (5 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!d4a89e44`
Signal Metrics:	RSSI: -113.0 dBm SNR: 1.25 dB

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 48993692, "to": 4294967295, "channel": 32, "decoded": { "portnum": "TEXT_MESSAGE_APP", "payload": "QnVlbmFzIG5vY2hlcy4KSG95IGhlIHJlaW5zdGFsYWRvIGVsIGZpcm13YXJlIGRlIHVuIEhlbHRlYyBWNCBjb24gcGFudGFsbGEgVEZUIHF1ZSBzZSByZWluaWNpYSBlbiBidWNsZS4gTWUgaGEgcGFzYWRvIHZhcmlhcyB2ZWNlcyB5IHBhcmVjZSB1biBwcm9ibGVtYSBkZSBtZW1vcmlhIGRlIE1lc2h0YXN0aWMgVUku", "bitfield": 1 }, "id": 2536153247, "rx_time": 1781809981, "rx_snr": 1.25, "rx_rssi": -113, "hop_start": 5, "relay_node": 141, "transport_mechanism": "TRANSPORT_LORA" }, "channel_id": "SFNarrow", "gateway_id": "!d4a89e44" }, "mesh_packet": { "from": 48993692, "to": 4294967295, "channel": 32, "decoded": { "portnum": "TEXT_MESSAGE_APP", "payload": "QnVlbmFzIG5vY2hlcy4KSG95IGhlIHJlaW5zdGFsYWRvIGVsIGZpcm13YXJlIGRlIHVuIEhlbHRlYyBWNCBjb24gcGFudGFsbGEgVEZUIHF1ZSBzZSByZWluaWNpYSBlbiBidWNsZS4gTWUgaGEgcGFzYWRvIHZhcmlhcyB2ZWNlcyB5IHBhcmVjZSB1biBwcm9ibGVtYSBkZSBtZW1vcmlhIGRlIE1lc2h0YXN0aWMgVUku", "bitfield": 1, "parsed_payload": { "text": "Buenas noches.\nHoy he reinstalado el firmware de un Heltec V4 con pantalla TFT que se reinicia en bucle. Me ha pasado varias veces y parece un problema de memoria de Meshtastic UI.", "type": "text_message", "portnum": "TEXT_MESSAGE_APP" } }, "id": 2536153247, "rx_time": 1781809981, "rx_snr": 1.25, "rx_rssi": -113, "hop_start": 5, "relay_node": 141, "transport_mechanism": "TRANSPORT_LORA" } }

Raw Packet Data (180 bytes)

4275656e6173206e6f636865732e0a486f79206865207265696e7374616c61646f20656c206669726d7761726520646520756e2048656c74656320563420636f6e2070616e74616c6c612054465420717565207365207265696e6963696120656e206275636c652e204d652068612070617361646f2076617269617320766563657320792070617265636520756e2070726f626c656d61206465206d656d6f726961206465204d6573687461737469632055492e

Hex Analysis:

Size:	180 bytes
Format:	Protobuf (Protocol Buffers)
Encoding:	Binary with varint and length-delimited fields

This is the raw protobuf-encoded payload as received from MQTT. The structure follows the Meshtastic protobuf schema definitions.

All Receptions

All gateways that received this packet
Correlation: Using Mesh Packet ID

Gateway	Time Offset	RSSI	SNR	Hops	Relay	Channel	Timestamp	Actions
REDEMER PC-00 (ROCA) Primary	0.000s Reference	-113.0 dBm	1.25 dB	5	`8d` GR02	SFNarrow	2026-06-18 19:13:02 UTC	Current
No other receptions found within ±2 seconds

1

Total Receptions

1

Unique Gateways

Packet #1146381 Success